//: C20:Apply.cpp
// From Thinking in C++, 2nd Edition
// Available at http://www.BruceEckel.com
// (c) Bruce Eckel 1999
// Copyright notice in Copyright.txt
// Using basic iterators
#include <iostream>
#include <vector>
#include <iterator>
using namespace std;

template<class Cont, class PtrMemFun>
void apply(Cont& c, PtrMemFun f)
{
    typename Cont::iterator it = c.begin();
    while (it != c.end()) {
        (it->*f)(); // Compact form
        ((*it).*f)(); // Alternate form
        it++;
    }
}

class Z
{
    int i;
public:
    Z(int ii) : i(ii) {}
    void g() {
        i++;
    }
    friend ostream&
    operator<<(ostream& os, const Z& z) {
        return os << z.i;
    }
};

int main()
{
    ostream_iterator<Z> out(cout, " ");
    vector<Z> vz;
    for (int i = 0; i < 10; i++)
        vz.push_back(Z(i));
    copy(vz.begin(), vz.end(), out);
    cout << endl;
    apply(vz, &Z::g);
    copy(vz.begin(), vz.end(), out);
} ///:~
